Heat exchanger

Abstract

The invention relates to a heat exchanger ( 1 ) comprising a shell ( 2 ) containing a heat exchange device ( 3 ) and delimiting a combustion chamber ( 30 ), said shell ( 2 ) being provided with an access opening and with a door ( 5 ) provided on its inner face with a burner ( 4 ). It is remarkable in that said door ( 5 ) is mounted pivotally around a pivot ( 6 ) attached to the end of a slide ( 7 ), in that said shell ( 2 ) is provided on its exterior surface with axial guide means ( 8 ) of said slide ( 7 ) along a displacement axis X 2 -X′ 2 which extends parallel to the longitudinal axis X-X′ of said shell ( 2 ), in that the pivot ( 6 ) extends along an axis Z-Z′ perpendicular to said displacement axis X 2 -X′ 2 , the travel of said slide ( 7 ) being greater than the length of the burner ( 4 ).

1 . A heat exchanger ( 1 ) comprising a gas-tight shell ( 2 ) containing a heat exchange device ( 3 ) and delimiting a combustion chamber ( 30 ), said shell ( 2 ) being provided with an access opening ( 230 ) and with a door ( 5 ) suitable for being able to close said access opening, said door ( 5 ) being provided with a burner ( 4 ), particularly for gas or fuel oil, protruding from its inner face ( 51 ), characterized in that said door ( 5 ) is mounted pivotally around a pivot ( 6 ) attached to the so-called “front” end ( 74 ) of a slide ( 7 ), or substantially to this front end, in that said shell ( 2 ) is provided on its exterior surface with guide means ( 8 ) which allow said slide ( 7 ) to be guided axially along a displacement axis X 2 -X′ 2  which extends parallel to the longitudinal axis X-X′ of said shell ( 2 ) and in that the pivot ( 6 ) extends along an axis Z-Z′ perpendicular to said displacement axis X 2 -X′ 2 , and in that the travel of said slide ( 7 ) is greater than the length of the burner ( 4 ), so that said door ( 5 ) can be moved from a closed position, in which it closes the access opening ( 230 ) of said shell ( 2 ), to a so-called “spaced-apart” position, in which it is moved away from this access opening ( 230 ) and in which the burner ( 4 ) is located outside the shell ( 2 ), and said door ( 5 ) being able to pivot around the pivot ( 6 ) when it is located in said “spaced-apart” position. 
     
     
         2 . The heat exchanger according to  claim 1 , characterized in that the door ( 5 ) can pivot around the pivot ( 6 ) at an angle of at least 180°. 
     
     
         3 . The heat exchanger according to  claim 1  or  2 , characterized in that the slide ( 7 ) is provided with an end-of-travel stop ( 75 ) which prevents it from leaving the guide means ( 8 ). 
     
     
         4 . The heat exchanger according to one of the preceding claims, characterized in that the slide ( 7 ) is a strip having an upper face ( 71 ) and a lower face ( 72 ) and in that the guide means ( 8 ) comprise two upper rotating rollers ( 81 ,  82 ) and two lower rotating rollers ( 83 ,  84 ) in the shape of twin wheels, mounted as idlers, provided with a groove ( 810 ,  820 ,  830 ,  840 ), the profile of which corresponds to that of said upper ( 71 ) and lower ( 72 ) faces of the slide. 
     
     
         5 . The heat exchanger according to  claim 4 , characterized in that the upper face ( 71 ) and the lower face ( 72 ) of the slide have the shape of a protruding V with two facets ( 711 ,  712 ,  721 ,  722 ). 
     
     
         6 . The heat exchanger according to one of the preceding claims, characterized in that a plate ( 56 ) is attached to the outer face ( 52 ) of the door ( 5 ) and has two protruding flanks ( 561 ) which extend in a plane perpendicular to the axis Z-Z′ of the pivot ( 6 ), in that each flank ( 561 ) is perforated with an aperture ( 5610 ), in that the pivot ( 6 ) has a blind hole ( 61 ) at each of its two ends and in that a shoulder screw ( 562 ) is screwed into each blind hole ( 61 ) through the aperture ( 5610 ) provided in the flank, so as to allow the pivoting of the door ( 5 ) around the pivot ( 6 ). 
     
     
         7 . The heat exchanger according to one of the preceding claims, characterized in that said door ( 5 ) is provided with blocking means ( 77 ) preventing its pivoting around the pivot ( 6 ) with respect to said slide ( 7 ) and holding it in a position where it is perpendicular to the displacement axis (X 2 -X′ 2 ) of said slide ( 7 ). 
     
     
         8 . The heat exchanger according to  claim 7 , characterized in that the slide ( 7 ) is provided at its front end with a port ( 76 ) passing through it from side to side, in that the door ( 5 ) has at its periphery, on its face situated facing the pivot ( 6 ), a blind hole and in that said blocking means comprise a removable pin ( 77 ) configured to be able to be inserted through said port ( 76 ), into said blind hole, thus blocking the pivoting movement of the door ( 5 ) with respect to the slide ( 7 ). 
     
     
         9 . The heat exchanger according to one of the preceding claims, characterized in that the door ( 5 ) is provided with at least one handle ( 58 ) on its outer face ( 52 ).